DC

UPS is a system which converts DC to AC. So, UPS takes DC power of battery as input and gives AC power as output. Today we are going to build a 100 watt 12v DC to 220v AC inverter. This Circuit is simple and very useful.

Most standard appliances are designed to accept only AC (alternating current) voltages because that's how electricity is supplied from the grid. In order to run an electronic device from a DC (direct current) source you obviously need to transform it into AC.